PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21303-1011-1Cap,valve

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · NSN 4810-01-449-1591 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-01-449-1591 — this item is cataloged by the U.S. Government under National Stock Number 4810-01-449-1591. Primary manufacturer part number: 21303-1011-1.
Features
  • Cap,valve — FSC 4810
  • Surface Treatment: ANODIZE
  • Surface Treatment Document and Classification: MIL-A-8625, TYPE 1, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE
  • Material Document and Classification: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE
  • Valve Type for Which Designed: DIRECTIONAL CONTROL LINEAR
  • Material: ALUMINUM ALLOY
  • 4 verified cross-references
  • Primary manufacturer: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Aluminum Alloy construction
General Description

The Cap,valve, cataloged under National Stock Number 4810-01-449-1591, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4810-01-449-1591
Primary Part Number21303-1011-1
Item NameCap,valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusACTIVE
Surface TreatmentANODIZE
Surface Treatment Document and ClassificationMIL-A-8625, TYPE 1, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE
Material Document and ClassificationQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE
Valve Type for Which DesignedDIRECTIONAL CONTROL LINEAR
MaterialALUMINUM ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-010-0653HRP43M INTERCHANGEABLE
Socket,plug-in Electronic Compon
Armel De Llc Dba Armel Electronics
3110-00-100-053218520 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
5999-00-863-3730 INTERCHANGEABLE
Contact Assembly,electrical
1630-00-865-0548 INTERCHANGEABLE
Sleeve and Shuttle Assembly
3460-01-129-640321303 INTERCHANGEABLE
Clamp,machine,hold Down
Jergens Inc Div Tooling Components Division
4320-01-194-832821303 INTERCHANGEABLE
Trunnion,pump
Parker Hannifin Corporation Div Hydraulic Systems Division
5940-01-204-548321303 INTERCHANGEABLE
Terminal Board
Te Connectivity Corporation
3040-01-449-144021303-1008-1 INTERCHANGEABLE
Shaft,shouldered
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
3040-01-449-147121303-1009-1 INTERCHANGEABLE
Shaft,shouldered
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4810-01-449-158421303-1006-1 INTERCHANGEABLE
Guide,valve Stem
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
21303-4 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21303-1011-1 PRIMARY Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21303 FIND 4 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21303 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
Related Parts
5935-00-010-0653INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
HRP43M
3110-00-100-0532INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
18520
5999-00-863-3730INTERCHANGEABLE
CONTACT ASSEMBLY,ELECTRICAL
1630-00-865-0548INTERCHANGEABLE
SLEEVE AND SHUTTLE ASSEMBLY
3460-01-129-6403INTERCHANGEABLE
CLAMP,MACHINE,HOLD DOWN
21303
4320-01-194-8328INTERCHANGEABLE
TRUNNION,PUMP
21303
5940-01-204-5483INTERCHANGEABLE
TERMINAL BOARD
21303
3040-01-449-1440INTERCHANGEABLE
SHAFT,SHOULDERED
21303-1008-1
3040-01-449-1471INTERCHANGEABLE
SHAFT,SHOULDERED
21303-1009-1
4810-01-449-1584INTERCHANGEABLE
GUIDE,VALVE STEM
21303-1006-1
4810-01-449-1589INTERCHANGEABLE
CAP,VALVE
21303-1012-1
6110-01-539-1090INTERCHANGEABLE
DISTRIBUTION BOX
2532

Frequently Asked Questions

What is NSN 4810-01-449-1591?

NSN 4810-01-449-1591 is a Cap,valve, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-01-449-1591?

NSN 4810-01-449-1591 has 4 cross-referenced part numbers: 21303-4 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21303-1011-1 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21303 FIND 4 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21303 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What NSN replaces 4810-01-449-1591?

There are 12 known substitutes for 4810-01-449-1591: 5935-00-010-0653, 3110-00-100-0532, 5999-00-863-3730 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21303-1011-1?

Key specifications for 21303-1011-1: Surface Treatment: ANODIZE; Surface Treatment Document and Classification: MIL-A-8625, TYPE 1, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE; Material Document and Classification: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE; Valve Type for Which Designed: DIRECTIONAL CONTROL LINEAR. 5 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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